Cisco Security Advisory – A vulnerability in the Internet Group Management Protocol (IGMP) version 3 implementation of Cisco IOS Software and Cisco IOS XE Software allows a remote unauthenticated attacker to cause a reload of an affected device. Repeated attempts to exploit this vulnerability could result in a sustained denial of service (DoS) condition.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/94148/cisco-sa-20100922-igmp.txt
Source: https://packetstormsecurity.com/files/94148/Cisco-Security-Advisory-20100922-igmp.html